US20030145413A1 - Wiper arm, in particular for a motor vehicle and method for producing the same - Google Patents

Wiper arm, in particular for a motor vehicle and method for producing the same Download PDF

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Publication number
US20030145413A1
US20030145413A1 US10/297,500 US29750002A US2003145413A1 US 20030145413 A1 US20030145413 A1 US 20030145413A1 US 29750002 A US29750002 A US 29750002A US 2003145413 A1 US2003145413 A1 US 2003145413A1
Authority
US
United States
Prior art keywords
wiper arm
lateral flanks
foregoing
profile section
wiper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/297,500
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English (en)
Inventor
Joachim Zimmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20030145413A1 publication Critical patent/US20030145413A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a wiper arm, in particular for a motor vehicle, and to a method for producing such a wiper arm, as generically defined by the preamble to the independent claims.
  • the wiper arm of the invention having the characteristics of the main claim has the advantage that by the insertion of a bottom into a U-shaped profile section, a closed rectangular profile with flexural and torsional strength is created. It is also advantageous in this respect that the wall thicknesses of both parts, that is, the bottom and the U-shaped profile section, can be kept less than if only a plain U-shaped profile section were used. If the bottom is furthermore secured to the lateral flanks only at some points, the profile can be produced very easily and economically. Moreover, this produces a smooth-surfaced bottom of the wiper arm, which improves the flow of air around the wiper arm.
  • the bearings of the wiper shafts can also be made smaller. Moreover, the lesser masses mean less wear on the bearings.
  • the lateral flanks have a plurality of swaged features, on which the bottom can come to rest upon being inserted into the profile section.
  • the bottom can as a result be inserted into the profile section without dropping into the interior of the U-shaped profile section, making it possible to dispense with further positioning tabs or other positioning aids.
  • the bottom has lugs, along its long sides that are oriented toward the lateral flanks, which can also engage the swaged features of the lateral flanks.
  • the bottom has at least one receptacle for a spring device, because then no further tab or bolt is needed to fasten a tension spring between the joint part and the fastening part.
  • the result is a substantial reduction in both cost and weight. Omitting the lapping over of the spring suspension eliminates some steps in production and achieves a markedly improved contour, which minimizes waste and thus saves material.
  • connection points of the bottom are located closer to the base than the edges, facing away from the base, of the lateral flanks of the profile section. In this way, the bottom is let into the profile section and is not apparent when the wiper arm is seen from the side, since the lateral flanks protrude past the bottom. Moreover, the weld points and the bottom are protected against environmental factors, such as salt air, etc.
  • the wiper arm is also advantageous, to improve the corrosion resistance, for the wiper arm to be made from zinc-plated sheet metal or zinc-plated sheet steel.
  • the remote action of the zinc also protects the weld points and cut edges against corrosion. Moreover, further surface treatment is no longer needed before the wiper arms are painted.
  • the bottom has holes, so that the bottom improves the stability of the profile section yet increases the weight of the wiper arm only minimally.
  • the provision of the holes can be determined by a finite elements process, for instance.
  • the method of the invention for producing the wiper arm has the advantage that by stamping out a bottom and inserting it into the profile section, the stability of the profile section and hence the stability of the wiper arm are enhanced, without increasing the weight of the wiper arm. Because the bottom is secured to at least one lateral flank by the projection welding process, a simple, economical way of increasing the stability of the profile section is attained.
  • FIG. 1 a schematic view of a wiper system
  • FIG. 2 a wiper arm of the prior art, in perspective
  • FIG. 3 the joint part of a wiper arm of a wiper system of the invention, in perspective;
  • FIG. 4 a wiper arm of a wiper system of the invention, in perspective
  • FIG. 5 a fastening end of a wiper arm, in perspective
  • FIG. 6 the fastening end of a wiper arm in a variation, in perspective
  • FIG. 7 a view into the interior of a wiper arm, in perspective
  • FIG. 8 a swaging point of a lateral flank of a wiper arm, in perspective
  • FIG. 9 the steps in the method of the invention, shown schematically.
  • FIG. 10 a detailed view of the swaging steps of the method of the invention.
  • FIG. 1 shows a wiper system 10 of the invention schematically.
  • a wiper motor 11 via a rod linkage 14 embodied for instance as a crank gear, a wiper shaft 16 is driven in pendulum fashion.
  • the wiper arm 18 is connected in a manner fixed against relative rotation to the wiper shaft 16 and, on its end remote from the wiper shaft 16 , it has a wiper blade 20 .
  • the wiper arm 18 substantially comprises a fastening part 22 and a joint part 24 , and the fastening part 22 connects the joint part 24 to the wiper shaft 16 in a manner fixed against relative rotation.
  • FIG. 2 shows a wiper arm of the prior art.
  • the joint part 24 is connected rotatably to the fastening part 22 by means of a bolt 26 .
  • the fastening part 22 and joint part 24 are braced via a spring device 28 , embodied for instance as a tension spring.
  • the spring device 28 is hooked to the joint part 24 in a tab 30 , which is formed as a lapping over from the edge, remote from the base, of the lateral flank.
  • the other end of the spring device 28 is secured at a fastening point to the fastening part, which point is located outside the pivot axis between the fastening part 22 and the joint part 24 .
  • FIG. 3 shows a joint part 24 of a wiper system 10 of the invention during the production process.
  • the joint part 24 of the wiper arm 18 comprises a profile section 32 and a bottom 34 .
  • the profile section 32 is essentially U-shaped and therefore has a base 36 with two lateral flanks 38 .
  • swaged features 40 are disposed on the lateral flanks 38 .
  • the bottom 34 is stamped out as a flat sheet-metal part and is embodied such that it essentially follows the contour of the lateral flanks 38 . In this way, the bottom 34 is fitted precisely into the U-shaped profile, specifically in such a way that when the bottom 34 is placed in the profile section 32 , it touches the profile section only at the swaged features 40 .
  • the bottom 34 has lugs 42 , on its long sides 41 oriented toward the lateral flanks 38 .
  • FIG. 4 shows a joint part 24 of a wiper system 10 of the invention with the bottom 34 put in place. Because the bottom 34 touches the lateral flanks 38 only in the region of the swaged features 40 , two opposed gaps 44 are created. The bottom 34 is welded to the profile sections 32 at the swaged features 40 .
  • FIG. 5 one fastening end 46 of a joint part 24 is shown in perspective.
  • the bottom 34 has a receptacle 48 , which is embodied as a hole.
  • One end of the spring device 28 (FIG. 2) can be hooked into this hole.
  • the bottom 34 also has a recess 50 , in order to create enough room for the spring device 28 .
  • the spring device 28 can also be disposed entirely inside the wiper arm 18 . As shown in FIG. 6, to that end a tab 30 can be formed out of the bottom 26 , and this tab extends semicircularly out of the plane of the bottom 34 into the interior of the profile section 32 . This variation of the invention is shown again in FIG. 7.
  • FIG. 7 shows a view into the fastening end 46 of the wiper arm 18 in perspective. It can be seen clearly here as well that the swaged features 40 extend so far in the direction of the base 36 that the bottom 34 disappears entirely inside the profile section 32 , in other words, that the outer plane of the bottom 34 is located closer to the base 36 than a plane that is defined by the edges, remote from the base, of the two lateral flanks 38 .
  • the swaged feature 40 on the lateral flank 38 is shown in detail.
  • part of the lateral flank 38 has been swaged on the inside of the U-shaped profile section 32 in such a way that a plateau 52 is created by the material swaged in the direction of the base.
  • the bottom 34 can then come to rest on this plateau 52 .
  • the method of the invention is shown in detail in its individual steps.
  • a first stamping step 60 the profile section 32 is stamped out of a flat metal sheet.
  • the stamped-out but still-flat profile section 32 is bent into a U shape.
  • the swaging step 64 that follows, the swaged features 40 with the plateaus 52 are made at the fastening points.
  • the bottom stamping step 66 in which the sheet-metal bottom is stamped out together with the lugs 42 .
  • the bottom 34 is inserted into the profile section 32 , and in the ensuing welding step, by the application of a voltage between the bottom 34 and the profile section 32 , these parts are welded together at the swaging points by the projection welding process.
  • the swaging step 64 is shown in somewhat more detail.
  • a swaging die 54 is placed against the edge, remote from the base, of the lateral flank 38 .
  • This die has the desired width of the swaged feature 40 and is positioned approximately in the middle of the cross section of the lateral flank on the edge remote from the base.
  • F a force that acts on the swaging die 54
  • the depth T of the swaged feature 40 that is, the spacing between the edge, remote from the base, of the lateral flank 38 and the plateau 42 is at least as great as the thickness of the bottom 34 .
  • the fastening part 22 can also be provided with a bottom 34 of this kind. It is also conceivable to omit the swaged features 40 and instead to have the bottom 34 merely rest on the edge, remote from the base, of the lateral flank 38 with the aid of the lugs 42 and to weld it there.
  • the bottom 34 can also be secured to the lateral flanks 38 only by clamps. In that case, in production, first only every other one of the swaged features 40 can then be made, for instance; then the bottom 34 can be put in place and then the swaged features 40 in between can be made, so that the bottom 34 is alternatingly held from the inside and the outside by the swaged features 40 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Resistance Welding (AREA)
  • Vehicle Body Suspensions (AREA)
  • Toys (AREA)
  • Connection Of Plates (AREA)
  • Pivots And Pivotal Connections (AREA)
US10/297,500 2001-05-09 2001-12-29 Wiper arm, in particular for a motor vehicle and method for producing the same Abandoned US20030145413A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10122458.3 2001-05-09
DE10122458A DE10122458A1 (de) 2001-05-09 2001-05-09 Wischerarm, insbesondere für ein Kraftfahrzeug und Verfahren zur Herstellung eines solchen

Publications (1)

Publication Number Publication Date
US20030145413A1 true US20030145413A1 (en) 2003-08-07

Family

ID=7684113

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/297,500 Abandoned US20030145413A1 (en) 2001-05-09 2001-12-29 Wiper arm, in particular for a motor vehicle and method for producing the same

Country Status (9)

Country Link
US (1) US20030145413A1 (ko)
EP (1) EP1395469B1 (ko)
JP (1) JP2004519380A (ko)
KR (1) KR100835302B1 (ko)
CN (1) CN1205076C (ko)
BR (1) BR0112298B1 (ko)
DE (3) DE10122458A1 (ko)
ES (1) ES2266301T3 (ko)
WO (1) WO2002090154A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050668A1 (en) * 2002-02-27 2005-03-10 Robert Bosch Gmbh Wiper arm
US9139164B2 (en) 2011-03-09 2015-09-22 Asmo Co., Ltd. Arm head

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10335853A1 (de) * 2003-08-06 2005-03-03 Valeo Wischersysteme Gmbh Verfahren zur Herstellung eines Wischarms, insbesondere für Scheibenreinigungsanlagen in Fahrzeugen
DE102005044761A1 (de) 2005-09-20 2007-03-29 Robert Bosch Gmbh Blechbefestigungsteil
DE102005046325B4 (de) * 2005-09-28 2020-08-13 Valeo Systèmes d'Essuyage Vorrichtung zum Befestigen einer Wischerfunktionseinheit an einer Wischerwelle
JP6451528B2 (ja) * 2015-07-03 2019-01-16 株式会社デンソー 車両用ワイパ装置
JP6536228B2 (ja) * 2015-07-03 2019-07-03 株式会社デンソー 車両用ワイパ装置
JP6642245B2 (ja) * 2016-04-27 2020-02-05 株式会社デンソー 車両用ワイパ装置
CN217374431U (zh) * 2021-10-28 2022-09-06 台州法雷奥温岭汽车零部件有限公司 用于车辆的雨刮器的雨刮臂，雨刮器以及车辆

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838782A (en) * 1955-02-23 1958-06-17 Gen Motors Corp Windshield wiper arm
US2850755A (en) * 1954-02-12 1958-09-09 Trico Products Corp Windshield wiper arm
US2860364A (en) * 1953-01-02 1958-11-18 Anderson Co Windshield wiper arm assembly
US3042955A (en) * 1959-03-11 1962-07-10 Trico Products Corp Windshield wiper arm
US3045272A (en) * 1959-09-01 1962-07-24 Trico Products Corp Windshield wiper
US3122770A (en) * 1961-01-12 1964-03-03 Anderson Co Arm extension adjustor
US4251899A (en) * 1978-12-14 1981-02-24 Robert Bosch Gmbh Wiper arm of an arrangement for wiping a vehicle window
US4502178A (en) * 1982-04-02 1985-03-05 Equipements Automobiles Marchal Stamped connector fittings for windscreen wiper arms
US5073060A (en) * 1988-08-09 1991-12-17 Trico Products Corporation Pivot joint

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031848A1 (de) * 1970-06-27 1972-01-05 Robert Bosch Gmbh, 7000 Stuttgart Antriebsarm für Scheibenwischer von Fahrzeugen, insbesondere Kraftfahrzeugen
DE19700180C2 (de) * 1997-01-04 2002-02-07 Bosch Gmbh Robert Wischerteil
DE19735301A1 (de) * 1997-08-14 1999-02-18 Bosch Gmbh Robert Wischarm
JP3174772B2 (ja) * 1999-06-25 2001-06-11 株式会社ミツバ ワイパアーム

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860364A (en) * 1953-01-02 1958-11-18 Anderson Co Windshield wiper arm assembly
US2850755A (en) * 1954-02-12 1958-09-09 Trico Products Corp Windshield wiper arm
US2838782A (en) * 1955-02-23 1958-06-17 Gen Motors Corp Windshield wiper arm
US3042955A (en) * 1959-03-11 1962-07-10 Trico Products Corp Windshield wiper arm
US3045272A (en) * 1959-09-01 1962-07-24 Trico Products Corp Windshield wiper
US3122770A (en) * 1961-01-12 1964-03-03 Anderson Co Arm extension adjustor
US4251899A (en) * 1978-12-14 1981-02-24 Robert Bosch Gmbh Wiper arm of an arrangement for wiping a vehicle window
US4502178A (en) * 1982-04-02 1985-03-05 Equipements Automobiles Marchal Stamped connector fittings for windscreen wiper arms
US5073060A (en) * 1988-08-09 1991-12-17 Trico Products Corporation Pivot joint

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050668A1 (en) * 2002-02-27 2005-03-10 Robert Bosch Gmbh Wiper arm
US6964079B2 (en) * 2002-02-27 2005-11-15 Robert Bosch Gmbh Wiper arm
US9139164B2 (en) 2011-03-09 2015-09-22 Asmo Co., Ltd. Arm head

Also Published As

Publication number Publication date
CN1441733A (zh) 2003-09-10
BR0112298B1 (pt) 2010-12-28
EP1395469A1 (de) 2004-03-10
CN1205076C (zh) 2005-06-08
KR20030031906A (ko) 2003-04-23
WO2002090154A1 (de) 2002-11-14
DE50110191D1 (de) 2006-07-27
EP1395469B1 (de) 2006-06-14
JP2004519380A (ja) 2004-07-02
DE10196422D2 (de) 2004-04-15
BR0112298A (pt) 2003-06-10
KR100835302B1 (ko) 2008-06-04
ES2266301T3 (es) 2007-03-01
DE10122458A1 (de) 2002-11-14

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION